Thermal sulfidation of alpha-Fe2O3 hematite to FeS2 pyrite thin electrodes: Correlation between surface morphology and photoelectrochemical functionality
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00492863" target="_blank" >RIV/68378271:_____/18:00492863 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989592:15310/18:73587959
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.cattod.2017.11.004" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2017.11.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2017.11.004" target="_blank" >10.1016/j.cattod.2017.11.004</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Thermal sulfidation of alpha-Fe2O3 hematite to FeS2 pyrite thin electrodes: Correlation between surface morphology and photoelectrochemical functionality
Popis výsledku v původním jazyce
We studied for the first time the correlation between photoelectrochemical (PEC) functionality of hematite films and after their sulfidation into pyrite. The highest PEC activity of hematite films of 560 uA cm−2 at 700 mV vs. Ag/AgCl was achieved with the HiPIMS photoelectrodes. The photoefficiency dropped dramatically to 4 uA cm−2 at 600 mV vs. Ag/AgCl after the sulfidation. A significant increase of grains‘ size, residual unreacted hematite, surface defects were the main reasons for the poor photoactivity. The sol-gel produced hematite yielded photocurrent of 30 uA cm−2 and a slight increase to 40 μA cm−2 (recorded at 500 mV vs. Ag/AgCl) of the corresponding pyrite version. Both these electrodes showed also similar morphological characteristics. The structural, electronic and optical properties of the deposited films were determined using various methods e.g. Raman spectroscopy, SEM, and PDS.
Název v anglickém jazyce
Thermal sulfidation of alpha-Fe2O3 hematite to FeS2 pyrite thin electrodes: Correlation between surface morphology and photoelectrochemical functionality
Popis výsledku anglicky
We studied for the first time the correlation between photoelectrochemical (PEC) functionality of hematite films and after their sulfidation into pyrite. The highest PEC activity of hematite films of 560 uA cm−2 at 700 mV vs. Ag/AgCl was achieved with the HiPIMS photoelectrodes. The photoefficiency dropped dramatically to 4 uA cm−2 at 600 mV vs. Ag/AgCl after the sulfidation. A significant increase of grains‘ size, residual unreacted hematite, surface defects were the main reasons for the poor photoactivity. The sol-gel produced hematite yielded photocurrent of 30 uA cm−2 and a slight increase to 40 μA cm−2 (recorded at 500 mV vs. Ag/AgCl) of the corresponding pyrite version. Both these electrodes showed also similar morphological characteristics. The structural, electronic and optical properties of the deposited films were determined using various methods e.g. Raman spectroscopy, SEM, and PDS.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysis Today
ISSN
0920-5861
e-ISSN
—
Svazek periodika
313
Číslo periodika v rámci svazku
Sep
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
8
Strana od-do
224-230
Kód UT WoS článku
000436452100034
EID výsledku v databázi Scopus
2-s2.0-85034605767